Which doctrine can be used to establish an agreed-to boundary when the true boundary line is uncertain?

The agreed-boundary doctrine is a legal principle that applies when two or more parties have uncertain boundary lines between their properties. This doctrine allows the parties to agree upon a boundary line that differs from the actual, surveyed property line, effectively creating a new boundary based on mutual consent. The essence of this doctrine lies in the understanding that property owners can settle disputes and clarify their property boundaries informally, often to avoid potential legal battles or to maintain good neighborly relations.

When property owners align on a specific boundary line, even if it doesn't reflect the true measurements, the agreed-boundary doctrine recognizes that their mutual agreement establishes the boundary for future transactions and interactions regarding the properties. This agreement can be pivotal in preventing disputes that may arise due to unclear or ambiguous property lines.

The other options do not pertain to the establishment of boundaries in the same way. The party-walls doctrine relates to walls that straddle property lines and is primarily concerned with shared structures. Implied easements are rights derived from the use of land, rather than boundaries. The access doctrine generally governs the rights related to access to land but does not specifically address boundary agreements between neighboring properties.